CLINICAL PHARMACOLOGY
Papain, the proteolytic enzyme from the fruit of carica papaya, is a potent digestant of nonviable protein matter but is harmless to viable tissue. It is active over a pH range of 3 to 12. Papain is relatively ineffective when used alone as a debriding agent and requires the presence of activators to stimulate its digestive potency. In ACCUZYME Ointment, papain is combined with urea, a denaturant of proteins, to bring about two supplemental chemical actions: (1) to expose by solvent action the activators of papain, and (2) to denature the nonviable protein matter in lesions and thereby render it more susceptible to enzymatic digestion. Pharmacologic studies have shown that the combination of papain and urea result in twice as much digestive activity as papain alone.
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